Properties

Label 2800.2.k.k
Level $2800$
Weight $2$
Character orbit 2800.k
Analytic conductor $22.358$
Analytic rank $0$
Dimension $8$
CM no
Inner twists $8$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [2800,2,Mod(2351,2800)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2800, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 0, 0, 1]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("2800.2351");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2800 = 2^{4} \cdot 5^{2} \cdot 7 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 2800.k (of order \(2\), degree \(1\), minimal)

Newform invariants

comment: select newform
 
sage: f = N[0] # Warning: the index may be different
 
gp: f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(22.3581125660\)
Analytic rank: \(0\)
Dimension: \(8\)
Coefficient field: 8.0.796594176.2
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} - 4x^{7} + 18x^{6} - 40x^{5} + 83x^{4} - 104x^{3} + 22x^{2} + 24x + 4 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{13}]\)
Coefficient ring index: \( 2^{10} \)
Twist minimal: no (minimal twist has level 560)
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

$q$-expansion

comment: q-expansion
 
sage: f.q_expansion() # note that sage often uses an isomorphic number field
 
gp: mfcoefs(f, 20)
 

Coefficients of the \(q\)-expansion are expressed in terms of a basis \(1,\beta_1,\ldots,\beta_{7}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q - \beta_{4} q^{3} + \beta_{7} q^{7} - q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q - \beta_{4} q^{3} + \beta_{7} q^{7} - q^{9} - \beta_{2} q^{11} + \beta_{6} q^{13} - 2 \beta_{6} q^{17} + \beta_1 q^{19} - \beta_{3} q^{21} + 4 \beta_{4} q^{27} + 6 q^{29} + 2 \beta_{6} q^{33} - \beta_{5} q^{37} - \beta_{2} q^{39} - 2 \beta_{3} q^{41} + 2 \beta_{7} q^{43} - 2 \beta_{4} q^{47} - 7 q^{49} + 2 \beta_{2} q^{51} - \beta_{5} q^{53} - \beta_{5} q^{57} + \beta_1 q^{59} + 3 \beta_{3} q^{61} - \beta_{7} q^{63} + 2 \beta_{7} q^{67} - 4 \beta_{6} q^{73} - \beta_{5} q^{77} + 2 \beta_{2} q^{79} - 5 q^{81} - 7 \beta_{4} q^{83} - 6 \beta_{4} q^{87} - 2 \beta_{3} q^{89} + \beta_1 q^{91} + 6 \beta_{6} q^{97} + \beta_{2} q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q - 8 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 8 q - 8 q^{9} + 48 q^{29} - 56 q^{49} - 40 q^{81}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} - 4x^{7} + 18x^{6} - 40x^{5} + 83x^{4} - 104x^{3} + 22x^{2} + 24x + 4 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( -\nu^{6} + 3\nu^{5} - 11\nu^{4} + 17\nu^{3} - 4\nu^{2} - 4\nu + 116 ) / 18 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 4\nu^{6} - 12\nu^{5} + 62\nu^{4} - 104\nu^{3} + 250\nu^{2} - 200\nu - 50 ) / 9 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -\nu^{6} + 3\nu^{5} - 15\nu^{4} + 25\nu^{3} - 60\nu^{2} + 48\nu + 12 ) / 2 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( 46\nu^{7} - 161\nu^{6} + 719\nu^{5} - 1395\nu^{4} + 2807\nu^{3} - 2896\nu^{2} - 1576\nu + 1228 ) / 1026 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( 16\nu^{7} - 56\nu^{6} + 260\nu^{5} - 510\nu^{4} + 1016\nu^{3} - 1042\nu^{2} - 568\nu + 442 ) / 57 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( -50\nu^{7} + 175\nu^{6} - 841\nu^{5} + 1665\nu^{4} - 3745\nu^{3} + 4040\nu^{2} - 676\nu - 284 ) / 114 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( 248\nu^{7} - 868\nu^{6} + 4144\nu^{5} - 8190\nu^{4} + 18256\nu^{3} - 19628\nu^{2} + 3280\nu + 1379 ) / 513 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{7} + \beta_{6} - \beta_{4} + 1 ) / 2 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{7} + \beta_{6} - \beta_{4} - \beta_{3} - \beta_{2} + \beta _1 - 5 ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( -8\beta_{7} - 9\beta_{6} - 3\beta_{5} + 17\beta_{4} - 3\beta_{3} - 3\beta_{2} + 3\beta _1 - 16 ) / 4 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( -9\beta_{7} - 10\beta_{6} - 3\beta_{5} + 18\beta_{4} + 10\beta_{3} + 11\beta_{2} - 2\beta _1 + 15 ) / 2 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( -2\beta_{7} - 3\beta_{6} + 20\beta_{5} - 133\beta_{4} + 55\beta_{3} + 60\beta_{2} - 15\beta _1 + 102 ) / 4 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( 40\beta_{7} + 42\beta_{6} + 75\beta_{5} - 490\beta_{4} - 98\beta_{3} - 105\beta_{2} - 30\beta _1 + 200 ) / 4 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( 308\beta_{7} + 331\beta_{6} - 49\beta_{5} + 313\beta_{4} - 539\beta_{3} - 581\beta_{2} - 49\beta _1 + 324 ) / 4 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/2800\mathbb{Z}\right)^\times\).

\(n\) \(351\) \(801\) \(2101\) \(2577\)
\(\chi(n)\) \(-1\) \(-1\) \(1\) \(1\)

Embeddings

For each embedding \(\iota_m\) of the coefficient field, the values \(\iota_m(a_n)\) are shown below.

For more information on an embedded modular form you can click on its label.

comment: embeddings in the coefficient field
 
gp: mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
2351.1
−0.207107 0.0981308i
−0.207107 2.54762i
−0.207107 + 2.54762i
−0.207107 + 0.0981308i
1.20711 2.54762i
1.20711 0.0981308i
1.20711 + 0.0981308i
1.20711 + 2.54762i
0 −1.41421 0 0 0 2.64575i 0 −1.00000 0
2351.2 0 −1.41421 0 0 0 2.64575i 0 −1.00000 0
2351.3 0 −1.41421 0 0 0 2.64575i 0 −1.00000 0
2351.4 0 −1.41421 0 0 0 2.64575i 0 −1.00000 0
2351.5 0 1.41421 0 0 0 2.64575i 0 −1.00000 0
2351.6 0 1.41421 0 0 0 2.64575i 0 −1.00000 0
2351.7 0 1.41421 0 0 0 2.64575i 0 −1.00000 0
2351.8 0 1.41421 0 0 0 2.64575i 0 −1.00000 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 2351.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
4.b odd 2 1 inner
5.b even 2 1 inner
7.b odd 2 1 inner
20.d odd 2 1 inner
28.d even 2 1 inner
35.c odd 2 1 inner
140.c even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2800.2.k.k 8
4.b odd 2 1 inner 2800.2.k.k 8
5.b even 2 1 inner 2800.2.k.k 8
5.c odd 4 2 560.2.e.d 8
7.b odd 2 1 inner 2800.2.k.k 8
20.d odd 2 1 inner 2800.2.k.k 8
20.e even 4 2 560.2.e.d 8
28.d even 2 1 inner 2800.2.k.k 8
35.c odd 2 1 inner 2800.2.k.k 8
35.f even 4 2 560.2.e.d 8
40.i odd 4 2 2240.2.e.e 8
40.k even 4 2 2240.2.e.e 8
140.c even 2 1 inner 2800.2.k.k 8
140.j odd 4 2 560.2.e.d 8
280.s even 4 2 2240.2.e.e 8
280.y odd 4 2 2240.2.e.e 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
560.2.e.d 8 5.c odd 4 2
560.2.e.d 8 20.e even 4 2
560.2.e.d 8 35.f even 4 2
560.2.e.d 8 140.j odd 4 2
2240.2.e.e 8 40.i odd 4 2
2240.2.e.e 8 40.k even 4 2
2240.2.e.e 8 280.s even 4 2
2240.2.e.e 8 280.y odd 4 2
2800.2.k.k 8 1.a even 1 1 trivial
2800.2.k.k 8 4.b odd 2 1 inner
2800.2.k.k 8 5.b even 2 1 inner
2800.2.k.k 8 7.b odd 2 1 inner
2800.2.k.k 8 20.d odd 2 1 inner
2800.2.k.k 8 28.d even 2 1 inner
2800.2.k.k 8 35.c odd 2 1 inner
2800.2.k.k 8 140.c even 2 1 inner

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(2800, [\chi])\):

\( T_{3}^{2} - 2 \) Copy content Toggle raw display
\( T_{11}^{2} + 12 \) Copy content Toggle raw display
\( T_{19}^{2} - 42 \) Copy content Toggle raw display
\( T_{37}^{2} - 84 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{8} \) Copy content Toggle raw display
$3$ \( (T^{2} - 2)^{4} \) Copy content Toggle raw display
$5$ \( T^{8} \) Copy content Toggle raw display
$7$ \( (T^{2} + 7)^{4} \) Copy content Toggle raw display
$11$ \( (T^{2} + 12)^{4} \) Copy content Toggle raw display
$13$ \( (T^{2} + 6)^{4} \) Copy content Toggle raw display
$17$ \( (T^{2} + 24)^{4} \) Copy content Toggle raw display
$19$ \( (T^{2} - 42)^{4} \) Copy content Toggle raw display
$23$ \( T^{8} \) Copy content Toggle raw display
$29$ \( (T - 6)^{8} \) Copy content Toggle raw display
$31$ \( T^{8} \) Copy content Toggle raw display
$37$ \( (T^{2} - 84)^{4} \) Copy content Toggle raw display
$41$ \( (T^{2} + 56)^{4} \) Copy content Toggle raw display
$43$ \( (T^{2} + 28)^{4} \) Copy content Toggle raw display
$47$ \( (T^{2} - 8)^{4} \) Copy content Toggle raw display
$53$ \( (T^{2} - 84)^{4} \) Copy content Toggle raw display
$59$ \( (T^{2} - 42)^{4} \) Copy content Toggle raw display
$61$ \( (T^{2} + 126)^{4} \) Copy content Toggle raw display
$67$ \( (T^{2} + 28)^{4} \) Copy content Toggle raw display
$71$ \( T^{8} \) Copy content Toggle raw display
$73$ \( (T^{2} + 96)^{4} \) Copy content Toggle raw display
$79$ \( (T^{2} + 48)^{4} \) Copy content Toggle raw display
$83$ \( (T^{2} - 98)^{4} \) Copy content Toggle raw display
$89$ \( (T^{2} + 56)^{4} \) Copy content Toggle raw display
$97$ \( (T^{2} + 216)^{4} \) Copy content Toggle raw display
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